<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="./popup.css" />
</head>
<body>
<template id="li_template">
    <li>
        <a>
            <h3 class="title">Tab Title</h3>
            <p class="pathname">Tab Pathname</p>
        </a>
    </li>
</template>

<h1>Google Dev Docs</h1>
<button>Group Tabs</button>
<ul></ul>

<script src="./popup.js" type="module"></script>
</body>
</html>